Journal
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Volume 367, Issue 1888, Pages 589-599Publisher
ROYAL SOC
DOI: 10.1098/rsta.2008.0199
Keywords
transition to turbulence; pipe flow; lifetimes
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Funding
- Max Planck Society
- EPSRC [EP/F017413/1]
- EPSRC [EP/F017413/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F017413/1] Funding Source: researchfish
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As reported in a number of recent studies, turbulence in pipe flow is transient for Re < 2000 and the flow eventually always returns to the laminar state. Generally, the lifetime of turbulence has been observed to increase rapidly with Reynolds number but there is currently no accord on the exact scaling behaviour. In particular, it is not clear whether a critical point exists where turbulence becomes sustained or if it remains transient. We here aim to clarify if these conflicting results may have been caused by the different experimental and numerical protocols used to trigger turbulence in these studies.
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